1641103 has 2 divisors, whose sum is σ = 1641104. Its totient is φ = 1641102.

The previous prime is 1641091. The next prime is 1641131. The reversal of 1641103 is 3011461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820551 + 820552.

It is an arithmetic number, because the mean of its divisors is an integer number (820552).

2^1641103 is an apocalyptic number.

1641103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641103 is an equidigital number, since it uses as much as digits as its factorization.

1641103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1641103 is about 1281.0554242499. The cubic root of 1641103 is about 117.9538026571.

Adding to 1641103 its reverse (3011461), we get a palindrome (4652564).

The spelling of 1641103 in words is "one million, six hundred forty-one thousand, one hundred three".